The test was simple. Take manual and automatic versions of the fourth-gen Subaru WRX and throw the wicked bumps, blind crests and sheer ruggedness of Tasmania’s north-west coast at their all-wheel drive chassis.

After all, it’s these roads on which the original Rex made its name.

Both variants share the same 2.0-litre, turbocharged, direct-injection boxer ‘four’ and its 197kW/350Nm outputs. Where they differ is in how those figures translate to the tarmac.

While the six-speed manual follows traditional lines, with its viscous limited-slip centre differential and 50:50 standard drive split, the Lineartronic CVT offers up to eight ‘steps’ in Sport Sharp or manual mode and uses a ‘variable torque distribution’ all-wheel drive system for a 45:55 front:rear split.

Subaru wrx cvt engine

Masuo Takatsu, WRX Project General Manager, revealed to MOTOR that, due to the extra weight of the CVT, the front suspension – already featuring 39 per cent stiffer spring rates and a 3mm thicker anti-roll bar compared to the previous model – also gains firmer damper settings than the manual variant.

Subaru wrx cvt driving

Back on the power, the CVT retains its composure, allowing more throttle to be introduced earlier, fully utilising the immense all-wheel traction on corner exit.

Subaru wrx cvt gearbox

In essence, the combination of a slightly stiffer front-end, more responsive all-wheel drive system and the first truly sporty CVT makes the $2000 premium Subaru charges well worth the investment.

4 out of 5 stars

Specs

Engine: 1998cc flat-four, DOHC, 16v, turbo Power: 197kW @ 5600rpm Torque: 350Nm @ 2400-5200rpm 0-100km/h: 6.3sec (claimed) Weight: 1527kg Price: $40,990